US 12,281,426 B2
Washing machine and controlling method thereof
Keehwan Ka, Suwon-si (KR); and Seongjoo Han, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 20, 2020, as Appl. No. 16/953,913.
Claims priority of application No. 10-2019-0157548 (KR), filed on Nov. 29, 2019.
Prior Publication US 2021/0164142 A1, Jun. 3, 2021
Int. Cl. D06F 33/40 (2020.01); D06F 23/04 (2006.01); D06F 33/47 (2020.01); D06F 34/22 (2020.01); G06T 7/00 (2017.01); G06T 7/60 (2017.01); D06F 103/18 (2020.01); D06F 105/48 (2020.01); D06F 105/62 (2020.01)
CPC D06F 33/40 (2020.02) [D06F 23/04 (2013.01); D06F 33/47 (2020.02); D06F 34/22 (2020.02); G06T 7/0004 (2013.01); G06T 7/60 (2013.01); D06F 2103/18 (2020.02); D06F 2105/48 (2020.02); D06F 2105/62 (2020.02); G06T 2207/30164 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A washing machine comprising:
a washing tub formed with a predetermined pattern on a bottom surface below a pulsator with the predetermined pattern disposed in a center area thereof, the washing tub configured to accommodate a laundry;
a camera configured to be disposed in a direction towards an inside of the washing tub; and
a processor configured to:
capture an image of a center of the bottom surface of the washing tub and the pulsator by the camera during rotation of the washing tub, and
confirm whether water collection exists based on whether a shape of an object corresponding to the predetermined pattern, a vibration intensity and a rotation speed is detected in the image captured by the camera during the rotation of the washing tub and the pulsator,
based on the shape of an object corresponding to the predetermined pattern, the vibration intensity and a rotation speed pattern being detected, confirm that the water collection does not exist,
based on the shape of an object corresponding to the predetermined pattern, the vibration intensity and the rotation speed pattern being not detected, confirm that the water collection exists, and
based on the water collection being confirmed, control the rotation speed so that the washing tub rotates at a speed equal to or lower than a predetermined speed.